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130-3
120Ć3
Door Lock System Components
The power door lock system consists of the following
components:
S
Driver Door Module (DDM)
S
Passenger Door Module (PDM)
S
Liftgate Module (LGM)
S
Door lock relay
S
Door unlock relay
S
Body Control Module (BCM)
S
Reversible door lock actuators in each of the doors
S
LR/RR LOCKS 10A fuse (relay supply voltage)
S
Door lock switches in driver and passenger doors
(switches are integral components to the DDM and
PDM)
Door Lock System Controls
The power door lock system can be controlled by any of
the following:
S
A power door lock or unlock switch activation
S
A keyless entry transmission
S
An automatic door lock function
S
A delay lock function
S
Door lock cylinder switch activation
S
Lockout Prevention
S
An airbag deployment
Power Door Lock Operation
The power door lock switches are integral components
of the DDM and PDM. The switches are two position
normally open rocker switches. When placed in either
the lock or unlock positions, the switches provide a
direct input to the DDM or PDM. The DDM or PDM
monitors these inputs and sends a Class 2 message
indicating a change in the switch’s respective position.
Modules which activate the power door lock motors
receive the Class 2 message and activate the motor in
the appropriate direction to lock or unlock the vehicle’s
doors and liftgate. The modules which activate the
power lock motors are:
S
DDM (driver door lock actuator).
S
PDM (passenger front door lock actuator).
S
BCM (both rear door lock actuators).
S
LGM (liftgate door lock actuator).
The DDM, PDM and LGM are directly connected to the
respective door lock actuator through the door lock
motor lock and unlock circuits. Once a door lock or
unlock request has been received, the module will
supply battery voltage to one side of the actuator and
ground the other causing the doors to lock or unlock.
The rear passengers doors differ slightly in that they
use lock and unlock relays. The relays supply and coil
sides receive a constant voltage through the battery
voltage supply circuit. The normally closed contacts are
connected to ground and the control side is connected
to the BCM. Once a door lock or unlock request has
been received by the BCM, the BCM will ground the
control side of the appropriate relay. This energizes the
relay and allows voltage to be applied to either the door
lock motor lock or unlock circuits. since the other side of
the door lock actuator is connected to the normally
closed contacts of the opposing relay to ground, the
doors lock or unlock.
Circuit Operation
POWER DOOR LOCKS
130-4
POWER DOOR LOCKS
(Refer to Section 201 for photographs.)
Component
Photo No.
Body Control Module
(BCM)
On Rear Fuse Block, under left rear seat
53
. . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door Lock Actuator-Driver
In the left front door
97
. . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door Lock Actuator-Front
Passenger
In the right front door
97
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door Lock Actuator-
Left Rear
In the left rear door
98
. . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door Lock Actuator-Liftgate
Inside the liftgate
114
. . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door Lock Actuator-
Right Rear
Inside the right rear door
98
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Driver Door Module (DDM)
On lower part of the driver door switch panel
95
. . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Passenger Door
Module (FPDM)
On lower part of passenger door switch panel
96
. . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuse Block-Rear
Under the left rear seat
52
. . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liftgate Module (LGM)
Inside the liftgate
113
. . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lock Relay 18
In the Rear Fuse Block
54
. . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unlock Relay 24
In the Rear Fuse Block
54
. . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connector
C500 (12-BLK)
Midpoint of leading edge of left front door
93
. . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C600 (12-BLK)
Midpoint of leading edge of right front door
93
. . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C700 (17-NAT)
Midpoint of leading edge of left rear door
94
. . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C800 (17-NAT)
Midpoint of leading edge of right rear door
94
. . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C900 (6-BLK)
Top of the liftgate
107
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ground
G302
On the lower left B-pillar
105
. . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Component Location Index
133
ANTI-THEFT SYSTEM
Body Control Module (BCM)
Fuse Block-Underhood
Instrument Panel Cluster (IPC)
Passlock Sensor
Powertrain Control Module (PCM) (4.2L)
Powertrain Control Module (PCM) (5.3L)
Component Index
133-0
ANTI-THEFT SYSTEM
PNK
0.35
INSTRUMENT
PANEL
CLUSTER
(IPC)
Connector
IGN E
Fuse 22
10A
HOT IN RUN AND START
FUSE
BLOCK-
UNDERHOOD
Connector
B6
B7
PNK
0.35
C2
See Power
Distribution,
page 10-13.
See Power
Distribution,
page 10-13.
Gauges
and
Indicators
A4
BLK/WHT
0.5
GND
Security
LOGIC
See Ground
Distribution,
page 14-1.
BLK/WHT
0.8
G102
B1
Class 2
serial data
Data Lines
GRY
0.35
YEL
0.35
DK GRN
0.35
*59
POWERTRAIN
CONTROL
MODULE
(PCM)
(4.2L)
(5.3L)
Connector 4.2L
Connector 5.3L
*58
**58
**59
C1
C1
*
4.2L
**
5.3L
Class 2
serial
data
Class 2
serial
data
Data
Lines
LT GRN
0.35
B1
C1
F14
C2
Class 2
serial
data
Class 2
serial
data
E8
C2
BLK
0.35
C4
D3
C201
Connector
Security
system
sensor low
reference
BLK
0.35
2
Tamper
resistor
Security
sensor
Tamper
sensor
Hall effect
sensor
C1
B10
Security
system
sensor
signal
1
Data
C2
C2
E9
3
12 V
reference
12 volt
reference
BODY
CONTROL
MDOULE
(BCM)
Connector
PASSLOCK
SENSOR
Connector
YEL
0.35
YEL
0.35
RED/
WHT
0.35
RED/
WHT
0.35
Circuit Schematic
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